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An upper and lower body casting (often called a split casing or split housing casting) refers to a two-piece metal enclosure manufactured by casting the top (upper) and bottom (lower) halves separately. When bolted together along a precision-machined horizontal or vertical split flange, the two halves form a pressure-tight internal cavity for rotating or stationary internal components.

A large brass lifting arm casting (or heavy-duty cast brass lever/rocker arm) is a heavy-section mechanical linkage engineered to transfer high loads, torque, or leverage in demanding machinery assemblies. Unlike small precision lever arms used in control valves or electrical switches, large brass lifting arms are heavy structural castings designed to handle heavy mechanical stress, impact, and corrosive working environments without galling or sparking.

A small brass lifting arm casting is a compact, precision-cast brass mechanical component designed to function as a lever, rocker arm, or linkage handle. It translates rotary or manual force into linear lifting motion to raise pins, valve stems, latches, or internal linkages. Brass is selected for these small mechanical arms due to its non-sparking properties, natural corrosion resistance, low friction at pivot points, and attractive finish.